Patent US2581390A successfully refreshed from Google Patents.
US2581390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unsaturated acid esters of oxy
Assignee: —
•
Filing: —
•
Granted: 1952-01-08
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Expires: 1969-01-08
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:12
CPC Classifications
C; C08; C08L; C08L61/00; C08L61/04; C08L61/06; C08L61/14; C08G; C08G8/00; C08G8/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
AN ESTER IN WHICH THE ACYL RADICAL IS THAT OF AN UNSUBSTITUTED ALPHA-BETA MONO-OLEFINIC MONOCARBOXY ACID SATURATED EXCEPT FOR THE ALPHA-BETA OLEFINIC LINKAGE AND HAVING LESS THAN 8 CARBON ATOMS, AND THE ALCOHOLIC RADICAL IS THAT OF CERTAIN HYDROPHILE POLYHYDRIC SYNTHETIC PRODUCTS; SAID HYDROPHILE SYNTHETIC PRODUCTS BEING OXYALKYLATION PRODUCTS OF (A) AN ALPHA-BETA ALKYLENE OXIDE HAVING NOT MORE THAN 4 CARBON ATOMS AND SELECTED FROM THE CLASS CONSISTING OF ETHYLENE OXIDE, PROPYLENE OXIDE, BUTYLENE OXIDE, GLYCIDE, AND METHYLGLYCIDE; AND (B) AND OXYALKYLATION-SUSCEPTIBLE, FUSIBLE, ORGANIC SOLVENTSOLUBLE, WATER-INSOLUBLE, PHENOL-ALDEHYDE RESIN; SAID RESIN BEING DERIVED BY REACTION BETWEEN A DIFUNCTIONAL MONOHYDRIC PHENOL AND AN ALDEHYDE HAVING NOT OVER 8 CARBON ATOMS AND HAVING ENE FUNCTIONAL GROUP REACTIVE TOWARD SAID PHENOL; SAID RESIN BEING FORMED IN THE SUBSTANTIAL ABSENCE OF PHENOLS OF FUNCTIONALITY GREATER THAN 2; SAID PHENOL BEING OF THE FORMULA:
Claim 2
Dependent Claim
138 words
AN ESTER IN WHICH THE ACYL RADICAL IS THAT OF AN UNSUBSTITUTED ALPHA-BETA MONO-OLEFINIC MONOCARBOXY ACID SATURATED EXCEPT FOR THE ALPHA-BETA OLEFINIC LINKAGE AND HAVING LESS THAN 8 CARBON ATOMS, AND THE ALCOHOLIC RADICAL IS THAT OF CERTAIN HYDROPHILE POLYHYDRIC SYNTHETIC PRODUCTS; SAID HYDROPHILE SYNTHETIC PRODUCTS BEING OXYALKYLATION PRODUCTS OF (A) AN ALPHA-BETA ALKYLENE OXIDE HAVING NOT MORE THAN 4 CARBON ATOMS AND SELECTED FROM THE CLASS CONSISTING OF ETHYLENE OXIDE, PROPYLENE OXIDE, BUTYLENE OXIDE, GLYCIDE, AND METHYLGLYCIDE; AND (B) AND OXYALKYLATION-SUSCEPTIBLE, FUSIBLE, ORGANIC SOLVENTSOLUBLE, WATER-INSOLUBLE, PHENOL-ALDEHYDE RESIN; SAID RESIN BEING DERIVED BY REACTION BETWEEN A DIFUNCTIONAL MONOHYDRIC PHENOL AND AN ALDEHYDE HAVING NOT OVER 8 CARBON ATOMS AND HAVING ENE FUNCTIONAL GROUP REACTIVE TOWARD SAID PHENOL; SAID RESIN BEING FORMED IN THE SUBSTANTIAL ABSENCE OF PHENOLS OF FUNCTIONALITY GREATER THAN 2; SAID PHENOL BEING OF THE FORMULA:
References Cited (Backward Citations)
US2178829A
Cited
US2499365A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |